Air-compressor.



H'. 1:. BAILEY.

' A111 COMPRESSOR.

APPLIOATION FILED JAH. 14,1911.

v992,634. Patented May'16, 1911.

Q 4. z SHEETS-SHEET 1.

T5 *Tijl zu: Non/els Fsrsns co., wAsmNomN. D4 c.

H. E. BAILEY.

- AIR COMPRESSOR. APPLICATION FILED JAN.14, 1911. 992,634.A 1 l l Y Patented May 16, 1911.

l 2 sums-snm z.

wlmfssfs v iwf/ron WZ? farryf.' Baile i l 8 Z mon/vers UNITED STATES PATENT OFFICE.

HARRY E. BAILEY, 0F ALBANY, NEW YORK.

AIR-COMPRESSOR.

Tooll whom it may concern.' p

Be it known that I, HARRY E. BAILEY, a citizen of the United States, and a resident of Albany, in the county of Albany and State of New York, have invented a new and Improved Air-Compressor, of which the following is a full, clear, and exact description.

The invention relates to hydraulic air compressors, such as shown and described in the application for Letters Patent of the into the receptacle filled with the beer or other liquid.

For the purpose mentioned use is made of two floats, adapted to rise and fall with the water in the casing, one of the floats controlling the inflow and outflow of the water, and the other float controlling the inflow of the air and the discharge of the compressed air.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a cross section of the hydraulic air compressor on the line 1 1 of Fig. 2; Fig. 2 is a sectional plan view of the same on the line 2 2 of Fig. 1; Fig. 3 is an enlarged sectional side elevation of the reducing valve in the water inlet pipe; Fig. 4 is an enlarged perspective view of the valve for controlling the air inlet and outlet; and Fig. 5 is a side eleyation of the valve controlling the water outlet. e

The casing A is provided in itsbottom with a water inlet B connected with a street main or other suitable source of water supply, and in the water inlet pipe B is arranged a reducing valve C of any approved Specification of Letters Patent.

Application filed January 14, 1911.

Patented May 16, 1911. seriai No. 602,577.

construction. The water passage in the inlet pipe B terminates in a valve D of any approved construction, preferably, however, a ball valve, as shown in Fig. 1. The bottom of the casing A is provided with a water outlet E having a valve seat E controlled by a valve F attached to a float G adapted to rise and fall in the casing A. The valve F is provided with a `stem F screwed or otherwise secured to the float G, and the stem Fy is provided with an opening F2 into which extends the free end of a lever D, fulcrumed at its other'end at D2 on the casing D3 of the valve D, and the said lever D is provided with a pin D2 adapted to engage the ball D5 of the valve D to hold the same 0E its seat D6 and thus allow the water to flow from the pipe B into the casing A, to fill the same.

In the stem F attached to the float G is screwed or otherwise secured an upwardlyextending stem G, on which is mounted to slide an upper float H adapted to control a valve I controlling the air inlet J and the a'ir outlet K, having a check Avalve K in the form of a slitted rubber cap which permits the air to escape but prevents the return of air into the casingA. A exible tube L leads from the upper end of the valve K to carry the compressed air to the keg, barrel or other receptacle in which the air is to be used. The stem G is provided near its upper end with a collar G2 adapted to be engaged by a cushion H2, in the form of a rubber ring, held in a cup H arranged on top of the float H, the said cup H being adapted to engage the under side of the valve I to lift the same 01T the seat of the air inlet J prior to the cushion H2 engaging the collar G2. The valve I in the normal position shown in Fig. 1 rests onV top of the air inlet J, which latter is provided with a an L-shaped tube, the horizontal member of which extends integrally from a ring J 2 bolted to the upper end of the casing A, and on top of this ring J 2 screws a cap K2, provided at its upper end with the compressed air outlet K. The lower portion of the valve I is provided with cut-out portions I4, I5, of which the portion IJL straddles the horizontal member of the air outlet J, the vertical member of which extends centrally in the ring J 2 and cap K2, as plainly shown in Fig. l. The valve I is also provided b-elow the annular shoulder I2 with openings IG for the passage of air to or from the inlet J at the time the valve I is open.

The operation is as follows: Then the several parts are in the position shown in Fig. l, then the valves F and I are in closed position while the valve D is open, so that water Hows from the pipe B into the casing A to gradually lill the same. As the water rises in the casing A, the float H is caused to rise with the water, which latter on rising in the casing compresses the air contained therein, the compressed air being discharged through the air outlet K and the tube L into the receptacle to be charged with compressed air. The iioat H in rising with the water finally causes the cup H to engage and lift the valve I so that the air inlet J is uncovered and the compressed air in the upper end of the casing A is allowed to escape through the outlet J. When this takes place the water, which was subjected to the pressure of the compressed air, is released of such pressure and suddenly moves upward, carrying with it the float I-I whereby the valve I is raised to the full extent to close the outlet K, at the same time the cushion H2 engages the collar G2 and lifts the same, whereby the float G is lifted. When this takes place the valve F is lifted off the seat E and the lever D is swung upward, whereby the ball D5 of the valve D is released from the pin D* and is forced by the water pressure against the seat D to close the valve D. The water in the casing A now flows through the open valve seat Fi into the discharge pipe E, and from the latter into a suitable place of discharge. As the water recedes in the casing` A the upper float H sinks and finally seats itself on the top of the float G, and when the water has fallen in the casing A to a level of about one-half the height of the float G, then the combined weights of the floats H and G cause a downward movement of both floats to return the valve F to its seat DG and to swing the lever D downward so that the pin D4 pushes the ball D5 downward and off the seat DG thus re-opening the valve D. Water now again flows into the casing A and the above described operation is repeated.

It is understood that as long as the valve G is held in theuppermost position the collar G2 holds the valve I in an open position even if the float H begins its downward movement, so that air can pass through the spout J and the inlet J into the casing A to lill the same as the water recedes. When the float G moves downward to its lowermost position, the stem G moves with it and the collar G2 moves out of engagement with the valve I to allow the latter to seat itself in the air inlet J with a view to close the same during the next compressing operation, which takes place on the filling of the casing A with water.

It is understood that by the arrangement described, the compressed air remaining in the casing A atthe time the float H nears the uppermost position is released from the said casing to allow a quick upward movement of the float G, as previously explained, with a view to open the valve F and then discharge the water from the casing. By the arrangement described it is impossible for the water to accidentally pass through the air outlet K and the tube L into the receptacle to be charged with air.

It will be noticed that the air compressor is simple and durable in construction, and the working parts are not liable easily to get out of order.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A hydraulic air compressor, comprising a casing, a valve located at the bottom of said casing for controlling the admission of Water thereinto through a valve located at the bottom of said casing for controlling the discharge of water therefrom, valve mechanism connected with the upper portion of said casing for controllingthe admission of air into said casing, and the discharge of air from said casing, said valve mechanism having a stationary member provided with a passage communicating with the open air at a point adjacent to the upper end of said casing and further provided with a movable member partially encircling said stationary member, a pair of floats located within said casing and arranged one above the other, the lower float being connected with said valves in the lower portion of said casing for the purpose of opening and closing the same, the upper float being provided with a member for engaging the lower end of said movable member in order to actuate said valve mechanism located in the upper portion of said casing, a rod connected with the lower float and extending loosely through the upper float, and mechanism carried by In testimony whereof I have signed lmy said upper ioat for shifting the lower float, name to this specification in the. presence of said mechanism being so arranged that said two subscribing witnesses.

member carried by said upper float engages HARRY E. BAILEY. said movable member of said valve meoha- Witnesses:

nism and shifts the position of said movable JNO. KING,

member before said lower float is lifted. A. L. AUSTIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

